Theodore Ts'o 02b9984d64 fs: push sync_filesystem() down to the file system's remount_fs() ... Previously, the no-op "mount -o mount /dev/xxx" operation when the file system is already mounted read-write causes an implied, unconditional syncfs(). This seems pretty stupid, and it's certainly documented or guaraunteed to do this, nor is it particularly useful, except in the case where the file system was mounted rw and is getting remounted read-only. However, it's possible that there might be some file systems that are actually depending on this behavior. In most file systems, it's probably fine to only call sync_filesystem() when transitioning from read-write to read-only, and there are some file systems where this is not needed at all (for example, for a pseudo-filesystem or something like romfs). Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: linux-fsdevel@vger.kernel.org Cc: Christoph Hellwig <hch@infradead.org> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Jan Kara <jack@suse.cz> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Anders Larsen <al@alarsen.net> Cc: Phillip Lougher <phillip@squashfs.org.uk> Cc: Kees Cook <keescook@chromium.org> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: Petr Vandrovec <petr@vandrovec.name> Cc: xfs@oss.sgi.com Cc: linux-btrfs@vger.kernel.org Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Cc: codalist@coda.cs.cmu.edu Cc: linux-ext4@vger.kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net Cc: fuse-devel@lists.sourceforge.net Cc: cluster-devel@redhat.com Cc: linux-mtd@lists.infradead.org Cc: jfs-discussion@lists.sourceforge.net Cc: linux-nfs@vger.kernel.org Cc: linux-nilfs@vger.kernel.org Cc: linux-ntfs-dev@lists.sourceforge.net Cc: ocfs2-devel@oss.oracle.com Cc: reiserfs-devel@vger.kernel.org		2014-03-13 10:14:33 -04:00
..
acl.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
acl.h	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
balloc.c	ext3: Avoid underflow of in ext3_trim_fs()	2012-11-19 21:36:12 +01:00
bitmap.c	ext3: use memweight()	2012-07-30 17:25:16 -07:00
dir.c	fs-ext3-use-rbtree-postorder-iteration-helper-instead-of-opencoding-fix	2014-01-23 16:37:03 -08:00
ext3_jbd.c	ext3: move headers to fs/ext3/	2012-03-31 16:03:16 -04:00
ext3.h	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2012-05-25 08:14:59 -07:00
file.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
fsync.c	ext3: Fix fsync error handling after filesystem abort.	2013-07-04 19:22:55 +02:00
hash.c	ext3: return 32/64-bit dir name hash according to usage type	2012-05-15 23:34:39 +02:00
ialloc.c	ext3: remove max_debt in find_group_orlov()	2012-04-11 11:12:44 +02:00
inode.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
ioctl.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
Kconfig	ext3: default to ordered mode	2010-07-23 12:50:55 +02:00
Makefile	[PATCH] ext3: uninline large functions	2006-12-07 08:39:35 -08:00
namei.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
namei.h	ext3: ext3_bread usage audit	2012-10-09 23:21:42 +02:00
resize.c	Ext3: return ENOMEM rather than EIO if sb_getblk fails	2013-01-21 11:19:57 +01:00
super.c	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
symlink.c	ext3: move headers to fs/ext3/	2012-03-31 16:03:16 -04:00
xattr_security.c	ext3: move headers to fs/ext3/	2012-03-31 16:03:16 -04:00
xattr_trusted.c	ext3: move headers to fs/ext3/	2012-03-31 16:03:16 -04:00
xattr_user.c	ext3: move headers to fs/ext3/	2012-03-31 16:03:16 -04:00
xattr.c	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
xattr.h	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00